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What are ADC parameters?
These ADC parameters determine the accuracy of the output available from the ADC. Dynamic performance parameters such as Signal-to- Noise-Ratio (SNR), Total Harmonic Distortion (THD), Signal Noise and Distortion (SINAD), and Effective Number of Bits (ENOB) are also explained.
What is ADC full scale range?
Full Scale Range (FSR) Full Scale Range is the range defined by the reference inputs of the ADC If the ADC has only a positive reference input and the negative reference input is tied to ground FSR = VRef+, otherwise FSR = VRef+ – VRef-.
What is missing codes in ADC?
The key for good performance for an ADC is the claim “no missing codes.” This means that, as the input voltage is swept over its range, all output code combinations will appear at the converter output. A DNL error of <±1LSB guarantees no missing codes (Figure 1a).
What is the output code of an ADC?
The output code will be its lowest (000) at less than 1/8 of the full-scale (the size of this ADC’s code width). Also, note that the ADC reaches its full-scale output code (111) at 7/8 of full scale, not at the full-scale value. Thus, the transition to the maximum digital output does not occur at full-scale input voltage.
What is an ADC ( analog to digital converter )?
What is an ADC (Analog to Digital Converter)? An analog to digital converter is a circuit that converts a continuous voltage value (analog) to a binary value (digital) that can be understood by a digital device which could then be used for digital computation.
What is the transfer function of an ADC?
The transfer function of an ADC is a plot of the voltage input to the ADC versus the code’s output by the ADC. Such a plot is not continuous but is a plot of 2 N codes, where N is the ADC’s resolution in bits.
What are the different types of ADC specifications?
The ADC performance specifications will quantify the errors that are caused by the ADC itself. ADC performance specifications are generally categorized in two ways: DC accuracy and dynamic performance.